Presentation on theme: "Data Flow Diagramming Solutions to In-Class Exercises"— Presentation transcript:
1 Data Flow Diagramming Solutions to In-Class Exercises
2 In-Class Exercise: Precision Tools Precision Tools sells a line of high-quality woodworking tools. When customers place orders on the company’s Web site, the system checks to see if the items are in stock, issues a status message to the customer, and generates a shipping order to the warehouse, which fills the order. When the order is shipped, the customer is billed. The system also produces various reports.1. Draw a Context Diagram for the order system.2. Draw a Level-0 DFD for the order system.
5 In-Class Exercise: Evergreen Nurseries Sells plants and gardening supplies wholesaleSales representative takes customer order via phoneverifies customer’s creditdetermines if items are in stocknotifies customer of product(s) availabilityinforms customer of special discounts and total costOrder is processedcustomer account updatedproduct inventory adjustedordered items pulled from stock and packedorder shipped to customer with packing slipBillingmonthly billing statement sent to customercustomer has 30 days to remit paymentMonthly reports produced for manager